Someone say me how to use this?

https://wasteof.money/posts/615f290c84392ca1551e4729#comments-615f3a5d84392ca1551e476f

ssh jeffalo@box 
mongo
use social2 
db.comments.update({ _id: ObjectId('615f3a5d84392ca1551e476f') }, { $set: { content: "amogus" } })